Comments on: Porsche, Gravity Racing and Zero Emission Race Cars http://993c4s.com/cars/porsche-prototypes/porsche-gravity-racing-and-zero-emission-race-cars/ Thu, 09 Feb 2012 14:06:34 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: 993C4Shttp://993c4s.com/cars/porsche-prototypes/porsche-gravity-racing-and-zero-emission-race-cars/comment-page-1/#comment-190 993C4S Mon, 28 Jul 2008 15:23:55 +0000 http://993c4s.com/?p=340#comment-190 @Glenn,Your a tough customer to please. :-) I understand what you mean, but I think we are limited by physics and terminal velocity. @Glenn,

Your a tough customer to please. :-) I understand what you mean, but I think we are limited by physics and terminal velocity.

]]> By: Glen Caineshttp://993c4s.com/cars/porsche-prototypes/porsche-gravity-racing-and-zero-emission-race-cars/comment-page-1/#comment-189 Glen Caines Mon, 28 Jul 2008 15:19:01 +0000 http://993c4s.com/?p=340#comment-189 skateboarders go 70 mph today, without the benefit of wind tunnel testing. These gravity racers look fun but I am unimpressed by the speed demonstrated. skateboarders go 70 mph today, without the benefit of wind tunnel testing. These gravity racers look fun but I am unimpressed by the speed demonstrated.

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